Feature 1Smart Interface: Digital meters include new technical features to make them easier to use. 2Stable Performance: Accurate and stable parameter display, low power consumption, vibration reduction, shockproof. 3Easy to Install: Ultra thin 60 mm total thickness, can be easily installed anywhere. 4Intelligent Use: Set alarm point and set peak memory, digital display, visual observation. 5Features: 24 red external LED lights for quick reference to engine parameters, measuring range 8~18V.Item Type:VoltmeterGaugeMaterial: ABSBackground Light: Red Led, White BackgroundMeasuring Range: 8~18VWorking Voltage: 12VApplicable Models: For General Purpose Car ModificationColour: Black .wang-edit-text{ font-family:'Arial' !important; } .wang-edit-text table { border-top: 1px solid #000; border-left: 1px solid #000; } .wang-edit-text table td, .wang-edit-text table th { border-bottom: 1px solid #000; border-right: 1px solid #000; padding: 3px 5px; } .wang-edit-text table th { text-align: center; }Package List1 x VoltmeterGauge1 x Power Harness1 x User ManualNote1. This product is suitable for 12V power supply, it is strictly forbidden to use power supply exceeding 18V.2. The power connection of this product is a red and black power cord, the red wire is connected to +12V, and the black wire is connected to ‑12V.3. Connect other connectors as plug and play connectors, and it is strictly forbidden to damage or replace other connectors.